The 2009 Mazda MX-5 Miatas in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 35.6 percent of the miles driven). The rest of the miles were in the city (19.9 percent), in heavy traffic (10.6 percent), and in the suburbs (0 percent).

In addition, the average 2009 Mazda MX-5 Miata in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.

2009 Mazda MX-5 Miata Gas Mileage (MPG)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and
where a car was driven. So you can get an idea of the Mazda MX-5 Miata's
real-world MPG based on how and where you drive a car.